org.apache.hadoop.io.compress.CompressionOutputStream Java Examples

@Override
public synchronized OutputStream createCompressionStream(
    OutputStream downStream, Compressor compressor,
    int downStreamBufferSize) throws IOException {
  OutputStream bos1 = null;
  if (downStreamBufferSize > 0) {
    bos1 = new BufferedOutputStream(downStream, downStreamBufferSize);
  } else {
    bos1 = downStream;
  }
  codec.getConf().setInt("io.file.buffer.size", 32 * 1024);
  CompressionOutputStream cos =
      codec.createOutputStream(bos1, compressor);
  BufferedOutputStream bos2 =
      new BufferedOutputStream(new FinishOnFlushCompressionStream(cos),
          DATA_OBUF_SIZE);
  return bos2;
}
 

@Override
public synchronized OutputStream createCompressionStream(
    OutputStream downStream, Compressor compressor,
    int downStreamBufferSize) throws IOException {
  if (!isSupported()) {
    throw new IOException(
        "LZO codec class not specified. Did you forget to set property "
            + CONF_LZO_CLASS + "?");
  }
  OutputStream bos1 = null;
  if (downStreamBufferSize > 0) {
    bos1 = new BufferedOutputStream(downStream, downStreamBufferSize);
  } else {
    bos1 = downStream;
  }
  conf.setInt("io.compression.codec.lzo.buffersize", 64 * 1024);
  CompressionOutputStream cos =
      codec.createOutputStream(bos1, compressor);
  BufferedOutputStream bos2 =
      new BufferedOutputStream(new FinishOnFlushCompressionStream(cos),
          DATA_OBUF_SIZE);
  return bos2;
}
 

@Override
public synchronized OutputStream createCompressionStream(
    OutputStream downStream, Compressor compressor,
    int downStreamBufferSize) throws IOException {
  OutputStream bos1 = null;
  if (downStreamBufferSize > 0) {
    bos1 = new BufferedOutputStream(downStream, downStreamBufferSize);
  } else {
    bos1 = downStream;
  }
  codec.getConf().setInt("io.file.buffer.size", 32 * 1024);
  CompressionOutputStream cos =
      codec.createOutputStream(bos1, compressor);
  BufferedOutputStream bos2 =
      new BufferedOutputStream(new FinishOnFlushCompressionStream(cos),
          DATA_OBUF_SIZE);
  return bos2;
}
 

@Override
public synchronized OutputStream createCompressionStream(
    OutputStream downStream, Compressor compressor,
    int downStreamBufferSize) throws IOException {
  if (!isSupported()) {
    throw new IOException(
        "LZMA codec cannot be loaded. " +
        "You may want to check LD_LIBRARY_PATH.");
  }
  OutputStream bos1 = null;
  if (downStreamBufferSize > 0) {
    bos1 = new BufferedOutputStream(downStream, downStreamBufferSize);
  } else {
    bos1 = downStream;
  }
  conf.setInt("io.compression.codec.lzma.buffersize", 64 * 1024);
  CompressionOutputStream cos =
      codec.createOutputStream(bos1, compressor);
  BufferedOutputStream bos2 =
      new BufferedOutputStream(new FinishOnFlushCompressionStream(cos),
          DATA_OBUF_SIZE);
  return bos2;
}
 

@Override
public synchronized OutputStream createCompressionStream(
    OutputStream downStream, Compressor compressor,
    int downStreamBufferSize) throws IOException {
  if (!isSupported()) {
    throw new IOException(
        "LZO codec class not specified. Did you forget to set property "
            + CONF_LZO_CLASS + "?");
  }
  OutputStream bos1 = null;
  if (downStreamBufferSize > 0) {
    bos1 = new BufferedOutputStream(downStream, downStreamBufferSize);
  } else {
    bos1 = downStream;
  }
  conf.setInt("io.compression.codec.lzo.buffersize", 64 * 1024);
  CompressionOutputStream cos =
      codec.createOutputStream(bos1, compressor);
  BufferedOutputStream bos2 =
      new BufferedOutputStream(new FinishOnFlushCompressionStream(cos),
          DATA_OBUF_SIZE);
  return bos2;
}
 

public OutputStream createCompressionStream(
    OutputStream downStream, Compressor compressor, int downStreamBufferSize)
    throws IOException {
  OutputStream bos1 = null;
  if (downStreamBufferSize > 0) {
    bos1 = new BufferedOutputStream(downStream, downStreamBufferSize);
  }
  else {
    bos1 = downStream;
  }
  CompressionOutputStream cos =
      createPlainCompressionStream(bos1, compressor);
  BufferedOutputStream bos2 =
      new BufferedOutputStream(new FinishOnFlushCompressionStream(cos),
          DATA_OBUF_SIZE);
  return bos2;
}
 

@Override
public synchronized OutputStream createCompressionStream(
    OutputStream downStream, Compressor compressor,
    int downStreamBufferSize) throws IOException {
  OutputStream bos1 = null;
  if (downStreamBufferSize > 0) {
    bos1 = new BufferedOutputStream(downStream, downStreamBufferSize);
  } else {
    bos1 = downStream;
  }
  codec.getConf().setInt("io.file.buffer.size", 32 * 1024);
  CompressionOutputStream cos =
      codec.createOutputStream(bos1, compressor);
  BufferedOutputStream bos2 =
      new BufferedOutputStream(new FinishOnFlushCompressionStream(cos),
          DATA_OBUF_SIZE);
  return bos2;
}
 

@Override
public synchronized OutputStream createCompressionStream(
    OutputStream downStream, Compressor compressor,
    int downStreamBufferSize) throws IOException {
  if (!isSupported()) {
    throw new IOException(
        "LZO codec class not specified. Did you forget to set property "
            + CONF_LZO_CLASS + "?");
  }
  OutputStream bos1 = null;
  if (downStreamBufferSize > 0) {
    bos1 = new BufferedOutputStream(downStream, downStreamBufferSize);
  } else {
    bos1 = downStream;
  }
  conf.setInt("io.compression.codec.lzo.buffersize", 64 * 1024);
  CompressionOutputStream cos =
      codec.createOutputStream(bos1, compressor);
  BufferedOutputStream bos2 =
      new BufferedOutputStream(new FinishOnFlushCompressionStream(cos),
          DATA_OBUF_SIZE);
  return bos2;
}
 

@Override
public synchronized OutputStream createCompressionStream(
    OutputStream downStream, Compressor compressor,
    int downStreamBufferSize) throws IOException {
  OutputStream bos1 = null;
  if (downStreamBufferSize > 0) {
    bos1 = new BufferedOutputStream(downStream, downStreamBufferSize);
  } else {
    bos1 = downStream;
  }
  codec.getConf().setInt("io.file.buffer.size", 32 * 1024);
  CompressionOutputStream cos =
      codec.createOutputStream(bos1, compressor);
  BufferedOutputStream bos2 =
      new BufferedOutputStream(new FinishOnFlushCompressionStream(cos),
          DATA_OBUF_SIZE);
  return bos2;
}
 

@Override
public synchronized OutputStream createCompressionStream(
    OutputStream downStream, Compressor compressor,
    int downStreamBufferSize) throws IOException {
  if (!isSupported()) {
    throw new IOException(
        "LZO codec class not specified. Did you forget to set property "
            + CONF_LZO_CLASS + "?");
  }
  OutputStream bos1 = null;
  if (downStreamBufferSize > 0) {
    bos1 = new BufferedOutputStream(downStream, downStreamBufferSize);
  } else {
    bos1 = downStream;
  }
  conf.setInt("io.compression.codec.lzo.buffersize", 64 * 1024);
  CompressionOutputStream cos =
      codec.createOutputStream(bos1, compressor);
  BufferedOutputStream bos2 =
      new BufferedOutputStream(new FinishOnFlushCompressionStream(cos),
          DATA_OBUF_SIZE);
  return bos2;
}
 

@Override
public BytesInput compress(BytesInput bytes) throws IOException {
  final BytesInput compressedBytes;
  if (codec == null) {
    compressedBytes = bytes;
  } else {
    compressedOutBuffer.reset();
    if (compressor != null) {
      // null compressor for non-native gzip
      compressor.reset();
    }
    CompressionOutputStream cos = codec.createOutputStream(compressedOutBuffer, compressor);
    bytes.writeAllTo(cos);
    cos.finish();
    cos.close();
    compressedBytes = BytesInput.from(compressedOutBuffer);
  }
  return compressedBytes;
}
 

@Override
public void flush() throws IOException {
  CompressionOutputStream cout = (CompressionOutputStream) out;
  cout.finish();
  cout.flush();
  cout.resetState();
}
 

/**
 * Creates a compression stream without any additional wrapping into
 * buffering streams.
 */
public CompressionOutputStream createPlainCompressionStream(
    OutputStream downStream, Compressor compressor) throws IOException {
  CompressionCodec codec = getCodec(conf);
  ((Configurable)codec).getConf().setInt("io.file.buffer.size", 32 * 1024);
  return codec.createOutputStream(downStream, compressor);
}
 

@Override
public CompressedSliceOutput get()
{
    try {
        compressor.reset();
        compressedOutput.reset();
        CompressionOutputStream compressionStream = codec.createOutputStream(compressedOutput, compressor);
        return new CompressedSliceOutput(compressionStream, compressedOutput, this, () -> {});
    }
    catch (IOException e) {
        throw new UncheckedIOException(e);
    }
}
 

@Override
public CompressionOutputStream createOutputStream(OutputStream out)
    throws IOException {
  if (ZlibFactory.isNativeZlibLoaded(getConf())) {
    return super.createOutputStream(out);
  }
  return new ReusableGzipOutputStream(out);
}
 

private BytesInput compress(ZstandardCodec codec, BytesInput bytes) throws IOException {
  ByteArrayOutputStream compressedOutBuffer = new ByteArrayOutputStream((int)bytes.size());
  CompressionOutputStream cos = codec.createOutputStream(compressedOutBuffer, null);
  bytes.writeAllTo(cos);
  cos.close();
  return BytesInput.from(compressedOutBuffer);
}
 

private void mockDelimitedTextFileWriter(boolean isCompressed) throws Exception {
    PowerMockito.mockStatic(FileSystem.class);
    FileSystem fs = Mockito.mock(FileSystem.class);
    Mockito.when(
            FileSystem.get(Mockito.any(URI.class),
                    Mockito.any(Configuration.class))).thenReturn(fs);

    Path fsPath = (!isCompressed) ? new Path(PATH) : new Path(PATH_GZ);

    GzipCodec codec = PowerMockito.mock(GzipCodec.class);
    PowerMockito.whenNew(GzipCodec.class).withNoArguments()
            .thenReturn(codec);

    FSDataInputStream fileInputStream = Mockito
            .mock(FSDataInputStream.class);
    FSDataOutputStream fileOutputStream = Mockito
            .mock(FSDataOutputStream.class);

    Mockito.when(fs.open(fsPath)).thenReturn(fileInputStream);
    Mockito.when(fs.create(fsPath)).thenReturn(fileOutputStream);

    CompressionInputStream inputStream = Mockito
            .mock(CompressionInputStream.class);
    CompressionOutputStream outputStream = Mockito
            .mock(CompressionOutputStream.class);
    Mockito.when(codec.createInputStream(Mockito.any(InputStream.class)))
            .thenReturn(inputStream);

    Mockito.when(codec.createOutputStream(Mockito.any(OutputStream.class)))
            .thenReturn(outputStream);
}
 

@Override
public void writeTestData(File file, int recordCounts, int columnCount,
        String colSeparator) throws IOException {

    // write random test data
    GzipCodec gzipCodec = new GzipCodec();
    CompressionOutputStream out = gzipCodec
            .createOutputStream(new FileOutputStream(file));
    BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(
            out));

    try {

        for (int r = 0; r < recordCounts; r++) {
            // foreach row write n columns

            for (int c = 0; c < columnCount; c++) {

                if (c != 0) {
                    writer.append(colSeparator);
                }

                writer.append(String.valueOf(Math.random()));

            }
            writer.append("\n");

        }

    } finally {
        writer.close();
        out.close();
    }

}
 

/**
 * {@inheritDoc}
 */
@Override
public CompressionOutputStream createOutputStream(final OutputStream out, final Compressor compressor)
        throws IOException {
    LOG.info("Creating compressor stream");
    return new OStreamDelegatingCompressorStream(new SnappyFramedOutputStream(out, conf.getInt(
            COMPRESSION_BLOCK_SIZE_CONF, SnappyFramedOutputStream.DEFAULT_BLOCK_SIZE),
            SnappyFramedOutputStream.DEFAULT_MIN_COMPRESSION_RATIO));
}
 

@Override
public CompressionOutputStream createOutputStream(OutputStream out)
    throws IOException {
  SimpleSeekableFormatOutputStream s = new SimpleSeekableFormatOutputStream(out);
  s.setConf(getConf());
  return s;
}
 

@Override
public void flush() throws IOException {
  CompressionOutputStream cout = (CompressionOutputStream) out;
  cout.finish();
  cout.flush();
  cout.resetState();
}
 

@Override
public void flush() throws IOException {
  CompressionOutputStream cout = (CompressionOutputStream) out;
  cout.finish();
  cout.flush();
  cout.resetState();
}
 

@Override
public CompressedSliceOutput get()
{
    try {
        compressor.reset();
        bufferedOutput.reset();
        CompressionOutputStream compressionStream = codec.createOutputStream(bufferedOutput, compressor);
        return new CompressedSliceOutput(compressionStream, bufferedOutput, this, () -> CodecPool.returnCompressor(compressor));
    }
    catch (IOException e) {
        throw new UncheckedIOException(e);
    }
}
 

@Override
public CompressionOutputStream createOutputStream(OutputStream out)
    throws IOException {
  CompressionOutputStream ret = super.createOutputStream(out);
  CompressionOutputStream spy = Mockito.spy(ret);
  Mockito.doAnswer(new GenericTestUtils.SleepAnswer(5))
    .when(spy).write(Mockito.<byte[]>any(), Mockito.anyInt(), Mockito.anyInt());
  return spy;
}
 

@Override
public void flush() throws IOException {
  CompressionOutputStream cout = (CompressionOutputStream) out;
  cout.finish();
  cout.flush();
  cout.resetState();
}
 

@Override
public void flush() throws IOException {
  CompressionOutputStream cout = (CompressionOutputStream) out;
  cout.finish();
  cout.flush();
  cout.resetState();
}
 

@Override
public CompressionOutputStream createOutputStream(OutputStream out)
    throws IOException {
  CompressionOutputStream ret = super.createOutputStream(out);
  CompressionOutputStream spy = Mockito.spy(ret);
  Mockito.doAnswer(new GenericTestUtils.SleepAnswer(5))
    .when(spy).write(Mockito.<byte[]>any(), Mockito.anyInt(), Mockito.anyInt());
  return spy;
}
 

/**
 * {@inheritDoc}
 */
@Override
public CompressionOutputStream createOutputStream(final OutputStream out) throws IOException {
    return createOutputStream(out, null);
}
 

@Override
public CompressionOutputStream createOutputStream(OutputStream out)
    throws IOException {
  return mock(CompressionOutputStream.class);
}
 

@Override
public CompressionOutputStream createOutputStream(OutputStream out,
    Compressor compressor) throws IOException {
  return mock(CompressionOutputStream.class);
}